{"id":4311,"date":"2014-07-02T21:12:12","date_gmt":"2014-07-02T21:12:12","guid":{"rendered":"http:\/\/www.ucf.edu\/pegasus\/?p=4311&post_type=story"},"modified":"2023-12-01T15:41:35","modified_gmt":"2023-12-01T15:41:35","slug":"opinion","status":"publish","type":"story","link":"https:\/\/www.ucf.edu\/pegasus\/opinion\/","title":{"rendered":"Robots vs Astronauts"},"content":{"rendered":"

Summer 2014<\/em><\/p>\n

Humans Are Essential for Space Exploration<\/h2>\n

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Joshua Colwell<\/a>, Ph.D.<\/strong>, is a planetary scientist, professor of physics,<\/i>\u00a0associate chair of the Department of Physics and assistant director of the Florida Space Institute. His research interests are the origin and evolution<\/i>\u00a0of the solar system. He leads the Center for Microgravity Research<\/a>, which conducts fundamental research enabled by microgravity.<\/i><\/p>\n

[\/sidebar]<\/p>\n

\u201cWe choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard.\u201d With these words, President John F. Kennedy roused America\u2019s support of space exploration in 1962. He also acknowledged the geopolitical competition with the Soviet Union that provided the impetus to make mankind\u2019s greatest technological achievement a possibility. Absent that Cold War motivation, our manned space program has languished in low Earth orbit for the last 40 years. That drought drives home the point that we must return to the spirit of human exploration of the final frontier exemplified by the Apollo program. The need to see what is over the next horizon \u2014 and not to simply see it, but to actually touch it \u2014 is a fundamental aspect of human nature. Those horizons beckon on countless asteroids, the moon and Mars.<\/p>\n

The manned exploration of space is an expression of one of our finest aspects \u2014 curiosity. To truly satisfy that curiosity we need to be participants. My colleague correctly points out that the robotic space program is a far more cost-effective means of advancing our scientific knowledge of the universe, and I could not agree more. While valuable advances have been made because of the manned program, it cannot and should not be justified on the grounds of scientific advancement. It is instead about something equally important as science \u2014 the inspiration of our species to pursue lofty goals.<\/p>\n

Space scientists frequently make the mistake of assuming that the space exploration budget is a zero-sum game, lamenting the money spent on the manned program that could be used to fund ambitious and scientifically valuable robotic missions. It is na\u00efve to expect that politicians would spend those same billions on purely scientific exploration. If the manned program was canceled today, its budget would disappear, never to be spent on space exploration of any kind. In contrast, the U.S. manned space program enables NASA to maintain a scientific program of space exploration that is by far the largest in the world. We need to move past the debate of manned versus unmanned programs and recognize that they serve different yet complementary roles, and that each endeavor ultimately strengthens the other.<\/p>\n

[divider][\/divider]<\/p>\n

Robots Are Key to Future Space Exploration<\/h2>\n

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Daniel Britt<\/a>, Ph.D.<\/strong>, is a professor of astronomy and a member of the International Astronomical Union and the American Astronomical Society. His research focuses on using remote sensing tools to determine the composition and evolution of solar system objects such as asteroids, comets and Mars. Every NASA rover that\u2019s been sent to the red planet, including the current\u00a0<\/i>Curiosity\u00a0rover, has included equipment Britt designed and built.<\/i><\/p>\n

[\/sidebar]<\/p>\n

On the plus side, humans in space provide operational flexibility, inspiration and native intelligence. On the minus side, that flexibility comes at a steep price. Humans are heavy, fragile, dirty, vulnerable, picky about their environment, and have a low tolerance for the space environment (i.e., high energy radiation, extreme heat and cold, etc.). The fragility of humans, our aversion for risking human life, and the all-too-human need for consumables (food, water and oxygen) require vast amounts of money to pay for the extra engineering and multiple redundant systems we demand to reduce risk to astronauts, as well as for the vastly larger support crews needed to baby-sit every aspect of daily life during a manned space mission.<\/p>\n

For crewed spacecraft, Venus and Mercury are impossibly hot, and the asteroid belt and Jupiter are impossibly cold. The longer travel times to these worlds would be a death sentence from radiation exposure, not to mention bone loss and muscle atrophy. Once at an exploration target, humans can be a mixed blessing. Imagine trying to search for life on Mars with human explorers who are shedding pollutants and terrestrial contamination with literally every step and breath.<\/p>\n

Fundamentally there is no real choice between robotic and human exploration of space, however. Both are synergistic and mutually dependent. Robotic exploration is necessary to enable human exploration by setting the context, providing critical information, and reducing the risk to humans. Imagine how the Apollo program would have functioned without its robotic precursors \u2014 Lunar Orbiter to map the moon\u2019s surface, Ranger to get close-up views of areas that helped perfect NASA\u2019s navigation skills (remember that NASA missed the moon with two of the first three Rangers to get that far), and Surveyor to explore the surface, determine its composition and practice soft landings. Without these robotic precursors it would\u2019ve been impossible to know where to go on the moon, to design the landing hardware, or to have any real idea of what to do once we got there \u2014 other than plant the flag.<\/p>\n

Is there a choice between human and robotic exploration? Not really. Considering the current limited range of human exploration, robotic exploration is essential to enable manned missions. For the rest of the solar system, robotic exploration is the only realistic game in town.<\/p>\n

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